Improved weatfibr-strep



@We 9 d g @met @time JOSEPH JOHNSTON, OF CHICAGO, ILLINOIS.

Letters Patent No. 88,57 2, dated Ap/ril 6, 1869.

IMPROVE!) WEATHER-STRIP.

'The Schedule referred to in these Letters Patent. and making part of the eamo.

To all whom 'it mov/y concernl Be it known that I, JOSEP'H JOHNSTON, (subject of Queen Victoria,) resident of Chicago, in` the county of Cook, and State of Illinois, have invented a new and improved Mode of Constructing:lr an Adjustable Threshold for Doors and Door-Frames; and I do hereby declarethat thel following is a fnllland. exaetdescription thereof, reference being had tothe accompanying drawings, and to the letters of referenceV marked thereon, making a part of this specification.

lhe nature of my invention consists in so construct, in g an adjustable threshold fordoors and door-frames, that the dust, damp, and cold, are excluded by the application of cloth, vulcanized, or otherwise, or any other suitable material.4 I

To enable others'skilled in the art to make anduse my invention, I will'proceed to describe its construction and operation. V

I-,construct my adjustable threshold in the following manner, to wit:

I divide the 4ordinary threshold longitudinallyr into two parts, on a line ofthe vertical plane, which would, if extended, bisect the door when closed, leaving one half the door outside the plane, and the other half iside said plane. I thencut a groove, about oneeighth of an inch from the line of division, in' either piece of the threshold, so as to insert therein a narrow strip of Indiafrubber cloth, ot the width of the.- thickness of the door, or perhaps half an inch wider,. fastening the same to its place with small tacks, screws,

or in any other suitable manner, and put the threshold in position, crowding the pieces together, so as to adjust the convex 'surface of the cloth to fill the space between the door and the threshold,l so as to exclude rain, dust, damp, and cold, and fasten itin .position The rubber'clothf-when in position'in the-threshold, is in the shape ofV a semi-cylinder, with the concave surface down, and the convex surface up, as shown in Figures I and III.

Figures II and IV represent a section ofthe jamb, or lintel of the door, with known inventions or contrivances in application.

I place the India rubber, 8vo., in the threshold, just back of the line of the insertion of the same in the jarnbs, so that the rain, beating into the door-way, will follow down the rubber on the jambsz and fall outside of that onthe threshold.

I make the inside part of the threshold, as well as of the strips on the jambs and lintel, thicker, so as to allow the rubber to fold over without binding or injury.

What I 'claim as my invention, and desire to secure by Letters Patent, is

The construction of an adjustable threshold, in the manner and form, and forthe purposesubst-antiaily as herein described.

` JOSEPH JOHNSTON. Witnesses:

Enw. J. HILL, SAMUEL E. DALE. 

